Bump xmlunit.version from 2.7.0 to 2.8.2 (#17)

Bumps `xmlunit.version` from 2.7.0 to 2.8.2.

Updates `xmlunit-core` from 2.7.0 to 2.8.2
- [Release notes](https://github.com/xmlunit/xmlunit/releases)
- [Changelog](https://github.com/xmlunit/xmlunit/blob/main/RELEASE_NOTES.md)
- [Commits](https://github.com/xmlunit/xmlunit/compare/v2.7.0...v2.8.2)

Updates `xmlunit-matchers` from 2.7.0 to 2.8.2
- [Release notes](https://github.com/xmlunit/xmlunit/releases)
- [Changelog](https://github.com/xmlunit/xmlunit/blob/main/RELEASE_NOTES.md)
- [Commits](https://github.com/xmlunit/xmlunit/compare/v2.7.0...v2.8.2)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/parent/pom.xml b/parent/pom.xml
index b245a0c..bd68651 100644
--- a/parent/pom.xml
+++ b/parent/pom.xml
@@ -48,7 +48,7 @@
         <xalan.version>2.7.2</xalan.version>
         <xz.version>1.8</xz.version>
         <xmlsec.version>2.3.0-SNAPSHOT</xmlsec.version>
-        <xmlunit.version>2.7.0</xmlunit.version>
+        <xmlunit.version>2.8.2</xmlunit.version>
         
         <!-- OSGi related properties -->
         <wss4j.osgi.import />